/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iceberg.flink;

import java.util.Set;
import org.apache.flink.configuration.ConfigOption;
import org.apache.flink.table.api.TableSchema;
import org.apache.flink.table.catalog.ObjectPath;
import org.apache.flink.table.connector.sink.DynamicTableSink;
import org.apache.flink.table.connector.source.DynamicTableSource;
import org.apache.flink.table.factories.DynamicTableSinkFactory;
import org.apache.flink.table.factories.DynamicTableSourceFactory;
import org.apache.flink.table.utils.TableSchemaUtils;

public class FlinkDynamicTableFactory implements DynamicTableSinkFactory, DynamicTableSourceFactory {
  private final FlinkCatalog catalog;

  public FlinkDynamicTableFactory(FlinkCatalog catalog) {
    this.catalog = catalog;
  }

  @Override
  public DynamicTableSource createDynamicTableSource(Context context) {
    ObjectPath objectPath = context.getObjectIdentifier().toObjectPath();
    TableLoader tableLoader = createTableLoader(objectPath);
    TableSchema tableSchema = TableSchemaUtils.getPhysicalSchema(context.getCatalogTable().getSchema());
    return new IcebergTableSource(tableLoader, tableSchema, context.getCatalogTable().getOptions(),
        context.getConfiguration());
  }

  @Override
  public DynamicTableSink createDynamicTableSink(Context context) {
    ObjectPath objectPath = context.getObjectIdentifier().toObjectPath();
    TableLoader tableLoader = createTableLoader(objectPath);
    TableSchema tableSchema = TableSchemaUtils.getPhysicalSchema(context.getCatalogTable().getSchema());
    return new IcebergTableSink(tableLoader, tableSchema);
  }

  @Override
  public Set<ConfigOption<?>> requiredOptions() {
    throw new UnsupportedOperationException("Iceberg Table Factory can not be loaded from Java SPI");
  }

  @Override
  public Set<ConfigOption<?>> optionalOptions() {
    throw new UnsupportedOperationException("Iceberg Table Factory can not be loaded from Java SPI");
  }

  @Override
  public String factoryIdentifier() {
    throw new UnsupportedOperationException("Iceberg Table Factory can not be loaded from Java SPI");
  }

  private TableLoader createTableLoader(ObjectPath objectPath) {
    return TableLoader.fromCatalog(catalog.getCatalogLoader(), catalog.toIdentifier(objectPath));
  }
}
